37results about How to "High overlap" patented technology

The invention proposes a heat and cool power cogeneration system of an integrated multi-functional efficient mini-type gas turbine, which belongs to the novel heat and cool power cogeneration system device. To solve the frequent mismatching of cold and heat load and low efficiency operation of the conventional cogeneration system, measures such as steam reinjection, inlet gas cooling, gas fume and condensate water recovery are introduced on the basis of the heat and cool power cogeneration system of the mini-type gas turbine; in addition, the number of steam outlets and hot-water outlets is increased, thus forming the heat and cool power cogeneration system of the integrated multi-functional efficient mini-type gas turbine. The system is provided with various operation modes suitable for different occasions, can effectively solve the problem of mismatching of cold and heat load of the cogeneration system, so that the system can keep working in highly efficient mode.

A high power pulsed laser having a Q-switched seed laser lasing at a preselected wavelength at TEM00 mode to produce a pulsed seed beam is disclosed. One or more substantially non-depolarizing optical amplifier media namely Nd:YVO4 or Nd:GVO4 crystals are used in optical communication with the seed laser. The optical amplifier media has a stimulated emission spectrum overlapping the preselected wavelength. A pumping source is provided in optical communication with the optical amplifier media to supply 15 watt or more of pumping power to excite the amplifier media and amplify the pulsed seed beam. The resulting laser produces 15 watts or greater of output power at the preselected wavelength. A temperature controller is desirably provided to regulate the temperature of the optical amplifier medium within a preselected range selected to enhance the amplification of the seed beam by increasing the degree of overlap between the stimulated emission spectrum and the seed beam wavelength.

The invention discloses a multi-area array aerial camera platform calibration method with a constraint condition. The method includes: employing a data acquisition strategy of multiple cross flying camera station exposure to acquire multiple groups of sub-images with an adjacent virtual image overlap degree of more than 80%; making use of the control point of a ground calibration field to calculate a photographing centre distance of sub-cameras and a sub-camera line element; during aerotriangulation, conducting bundle block adjustment, according to the control point coordinate, the connection points among matched sub-images, and the external orientation element initial value, establishing a model through a collinearity equation, adopting the photographing centre distance of the sub-cameras as a given value, i.e. taking the sub-camera line element constant as the constraint condition, and taking platform calibration parameters as a whole to perform calculation to solve the angle elements in the external orientation elements of the sub-images. According to the calibration method, a lot of uniformly distributed connection points are matched, precision of the platform calibration parameters is improved through the constraint condition, higher stitching precision of the generated virtual images can be guaranteed, and the mapping precision can be higher.

The invention discloses a structural design method for an omni wheel and belongs to the mobile robot control field. As a hub of the omni wheel adopts an arrangement structure with two layers of an inner layer and an outer layer which are alternatively staggered at 45 degree angle, so the installation difficulty brought by the hub integration is avoided. A cushion block is clamped between an outer hub support and an inner hub support which are respectively connected with a spindle annulet. The invention causes the whole hub support to have better flexibility and easy installation. As a driven wheel uses an integrated structure of a support sleeve and the rubber vulcanization, the movement precision of the omni wheel is ensured. The invented omni wheel moves smoothly and has the advantages of compact structure and strong environmental adaptability.

The invention provides an ultraviolet light emitting diode epitaxial wafer and a manufacturing method thereof, which belong to the technical field of semiconductors. The ultraviolet light emitting diode epitaxial wafer comprises a substrate, a buffer layer, an undoped AlGaN layer, an N-type layer, an active layer and a P-type layer, the buffer layer, the undoped AlGaN layer, the N-type layer, theactive layer and the P-type layer are sequentially stacked on the substrate, the active layer comprises a plurality of quantum well layers and quantum barrier layers which alternately grow periodically, the quantum well layers are Si-doped AlxGa1-xN layers, x is greater than 0 but smaller than 0.4, thequantum barrier layer is Mg-dopedAlyGa1-yN layer, and y is greater than 0.5 but smaller than 0.7.The ultraviolet light emitting diode epitaxial wafer can effectively shield a built-in electric field generated by a polarization effect in the quantum well layer, so that the wave function overlapping rate of electrons and holes can be improved, the radiation recombination efficiency of the electrons and the holes can be improved, and finally the internal quantum efficiency of the ultraviolet light-emitting diode is improved.

The invention discloses a gain optical fiber for outputting specific single-mode lasers. The gain optical fiber comprises a fiber core, a wrapping layer and a coating layer, wherein the fiber core, the wrapping layer and the coating layer are sequentially arranged from inside to outside. A rare earth ion doping area is contained in the fiber core of the gain optical fiber, a corresponding relationship exists between a distribution area of the rare earth ion doping area in the fiber core and light strength distribution of the specific single-mode lasers output by the gain optical fiber in advance, and the corresponding relationship refers that an area scope of distribution of the rare earth ion doping area in the fiber core is an area scope of I>(1 / 2)Imax in the light strength distribution of the specific single-mode lasers in the fiber core, wherein the I is the light strength of the specific single-mode lasers at any point in the fiber core, the Imax is the maximum value of the light strength, and the number of the Imax is larger than or equal to one. The gain optical fiber can achieve fundamental mode output of an optical fiber laser, can further achieve output of a specific single high-order mode of the optical fiber laser, and has actual guiding significance on mode control of the optical fiber laser.

The invention discloses a massage chair with multiple massage movements for achieving staggered slippage massage. The massage chair comprises a left edge-on armrest plate, a right edge-on armrest plate and a sitting and lying integrated guiding track bracket wherein the left edge-on armrest plate and the right edge-on armrest plate are arranged in a spaced mode, the guiding track bracket is connected between the two armrest plates, the guiding track bracket is provided with two track plates which are arranged in parallel in a spaced mode along the curve of the neck, the back and the thighs of the human body, the top ends of the two track plates are fixedly connected through a neck supporting plate, at least two massage movements are arranged between the inner side faces of the two track plates in the sitting and lying direction in a layered mode, and each massage movement moves along a track of the corresponding layer height on the track plates for massaging the human body at the sitting and lying region; dual guide rails are adopted, different guide tracks are adopted for being matched with different movement structural modes, and the massage comfort level of the two movements is improved; due to the guiding tracks on the upper and lower layers, the stacked degree of the movements can be improved, and the stroke of the massage movements is increased; by adopting the two movements with different functions, the two movements can perform massage on the human body in various manipulations in the motion stacked massage region, and the massage comfort level is greatly improved.

An engine includes an in-cylinder injector injecting fuel into a cylinder, a port injector injecting fuel into an intake manifold, and a valve-opening-characteristic changing mechanism changing at least lift or opening duration of an intake valve. When the engine is in a predetermined operating region and the valve-opening-characteristic changing mechanism decreases the lift or the opening duration of the intake valve, the ratio of fuel injected by the in-cylinder injector is increased according to an amount of the decrease of the lift or the opening duration and accordingly a decrease in tumble ratio is compensated for by the injection flow.

It is a semi-conductor laser side pump solid ribbon laser, which is characterized by the following: the laser activation medium is laser solid ribbon of cuboid thin slice; the output pump light from semi-conductor laser pump is shaped into an one-dimensional parallel light of quadrate section; the light beam diameter of the pump light along thickness direction is less than half of the laser solid ribbon thickness; the pump light goes into the laser solid ribbon from the side of the solid ribbon; the laser solid ribbon dissipate heat from upper and down surfaces.

The invention discloses a neural problem generation method for improving correlation. The neural problem generation method for improving correlation comprises the steps: enabling a QG model based on seq2seq to be composed of an encoder layer and a decoder layer, and adding an attention mechanism and a copy mechanism; and providing a partial copy mechanism based on character overlapping. The method has the beneficial effects that through a partial copy mechanism based on the character overlap degree, the word level and the input document in the generated problem have higher overlap degree and correlation. Through a QA model-based reordering mechanism, higher scores can be given to the generated candidate questions with better quality, and the common questions difficult to answer can be filtered out.

This invention provides a turbine wheel apparatus and the gas flow measurement apparatus with the turbine wheel apparatus, which comprises shell, front flow guide apparatus, turbine wheel, fixed cover and rack assembly. Wherein, the front flow guide apparatus comprises flow guide body and its flange; the said turbine wheel comprises turbine wheel blade, turbine wheel center and is characterized by the intensely locating with multiple blades in the shape of inverse trapezium. Comparing with current technique, it can obviously restrain the separation turbo generation and reduce the pressure loss and is of high measurement sensitivity and reduces the loss caused by the gas flow friction and turbo in the ring channel surface at the minimal degree.

The invention provides a true radiographic image acquisition method, which comprises the following steps of: 1, establishing a digital surface model, and superposing a digital elevation model and a digital building model DBM to form the digital surface model required by ture radiographic image acquisition; 2, performing sight line analysis, and establishing a two-dimensional index matrix of the main image for recording the visibility of the main image; 3, according to a shielding detection algorithm, back-projecting all object space points in combination with internal and external orientationelements, judging whether the points are visible or not in combination with the states of the pixel points in the step 1, and further recording a detected shielding area; 4, because the sizes and theresolutions of the index map and the real image are the same, recording the positions of the shielding areas, projecting the shielding areas detected in the step 3 to the adjacent images except the main image, filling the invisible shielding area of the main image according to the index map, and reparing the texture of the shielding areas; step 5, carrying out color consistency processing; and 6,carrying out image mosaic.

The invention relates to a method and equipment for scale production of artemisinin. The method comprises: dissolving dihydroarteannuic acid in an organic solvent, adding a photosensitizer and an acid catalyst, adopting a light source to make the dihydroarteannuic acid be subjected to light oxidation so as to obtain peroxy alcohol of the dihydroarteannuic acid, carrying out acid catalysis so as to carry out Hock cut-off, and carrying out oxidation ring closing to produce the artemisinin, wherein the whole reaction or only the light oxidation reaction is performed in photosensitive oxidation reaction equipment. The present invention further comprises the photosensitive oxidation reaction equipment for performing the method. According to the present invention, the method has characteristics of low reaction temperature and high light source utilization rate, and the equipment has characteristics of high light source utilization rate, simple structure, low manufacturing cost, and high single-batch productivity.

The invention relates to a mixed lure for main pests on tobacco, and a preparation method and use of the mixed lure. Based on four common lepidopterous noctuidae pests on tobacco: Spodoptera litura Fabricius, Helicoverpa armigera Hubner, Helicoverpa assulta Guenee, and Agrotis ypsilon Rottemberg, two or three of four sex pheromones and additives are chosen (those of Helicoverpa armigera Hubner, Helicoverpa assulta Guenee cannot be chosen simultaneously) and jointly loaded in the same lure in respective proportions. In this way, the limits of trapping different kinds of pests are broken throughand multiple kinds of pests can be trapped simultaneously, thereby reducing the labor and trap costs and improving the trapping effect. The invention discloses an insect pheromone mixed lure capableof simultaneously attracting a plurality of main pests on tobacco for the first time, realizing high-efficiency attraction of the main pests on tobacco.

The invention relates to the field of semiconductors, in particular to a V-shaped-pit-based non-fluorescent-powder GaN-based white-light LED epitaxial structure and a preparation method thereof. According to the invention, the GaN-based white-light LED epitaxial structure is composed of a substrate, a nucleation layer, a non-doped GaN layer, an n type GaN layer, a low-temperature n type GaN layerformed on the n type GaN layer, a multi-quantum-well layer formed at the low-temperature n type GaN layer, and a p type GaN filling layer. Lots of V-shaped pits are generated in the low-temperature ntype GaN layer because of the stress releasing and low atomic mobility under a low temperature; after growth of the multi-quantum-well layer, side-wall quantum wells are formed in the V-shaped pits, wherein the light-emitting wavelengths are different from that of the C-surface quantum well; and white light emission is realized by regulating the dimensions and densities of the V-shaped pits reasonably. During the preparation process of the non-fluorescent-powder GaN-based white-light LED, no mask template or inverse etching process is needed and thus the process is simplified. The V-shaped-pit-based non-fluorescent-powder GaN-based white-light LED epitaxial structure and the preparation method thereof have the broad industrial application prospects.

The invention discloses a gain optical fiber for outputting specific single-mode lasers. The gain optical fiber comprises a fiber core, a wrapping layer and a coating layer, wherein the fiber core, the wrapping layer and the coating layer are sequentially arranged from inside to outside. A rare earth ion doping area is contained in the fiber core of the gain optical fiber, a corresponding relationship exists between a distribution area of the rare earth ion doping area in the fiber core and light strength distribution of the specific single-mode lasers output by the gain optical fiber in advance, and the corresponding relationship refers that an area scope of distribution of the rare earth ion doping area in the fiber core is an area scope of I>(1 / 2)Imax in the light strength distribution of the specific single-mode lasers in the fiber core, wherein the I is the light strength of the specific single-mode lasers at any point in the fiber core, the Imax is the maximum value of the light strength, and the number of the Imax is larger than or equal to one. The gain optical fiber can achieve fundamental mode output of an optical fiber laser, can further achieve output of a specific single high-order mode of the optical fiber laser, and has actual guiding significance on mode control of the optical fiber laser.

The invention provides a light emitting diode epitaxial wafer and a manufacturing method thereof, which belong to the technical field of semiconductors. The light emitting diode epitaxial wafer comprises a substrate, and a low-temperature buffer layer, a high-temperature buffer layer, an N-type layer, an active layer and a P-type layer which are sequentially stacked on the substrate. The active layer comprises a first quantum well layers close to the N-type layer and b second quantum well layers close to the P-type layer, In components in the first quantum well layers are smaller than In components in the second quantum well layers, and the thickness of the first quantum well layers is larger than that of the second quantum well layers; in components in the a first quantum well layers areincreased layer by layer in the stacking direction of the epitaxial wafer, and the thicknesses of the a first quantum well layers are decreased layer by layer. According to the light emitting diode epitaxial wafer, the overlapping degree of wave functions of electrons and holes in spatial distribution can be increased, the energy band inclination phenomenon in the multi-quantum well layer is improved, and the internal quantum efficiency of an LED is improved.

The invention provides a video processing method and device, electronic equipment and a computer readable storage medium, and relates to the field of video processing. The method comprises the following steps: acquiring a plurality of pieces of first action fragment time information of video information based on the feature sequence extracted from the video information; sequentially determining atime starting point set and a time stopping point set of time information of each candidate action segment based on each feature in the feature sequence; determining a second time starting point corresponding to each piece of first action segment time information, and determining a second time stopping point corresponding to each piece of first action segment time information; and generating a plurality of pieces of corrected first action fragment time information by adopting the second time starting point and the second time stopping point. According to the method and the device, the action fragment time information of the human activities can be extracted from the unprocessed video.

The present invention belongs to the technical field of network analysis, and relates to a bridge node identification method based on the hypergraph entropy. A relatively stable triangle element is used to construct a super edge, and a super edge is used to represent the entire network. The algorithm is characterized in that: the hypergraph entropy, the Jaccard similarity coefficient, and other factors are considered in the algorithm; the hypergraph entropy provides a basis for measuring the quality of community division, and the hypergraph entropy takes into account the connection relationship inside the community and the connection relationship between the communities, wherein the smaller the hypergraph entropy is, the looser the connection relationship between the communities is, and the closer the connection relationship inside the community is, so that the community identification result is ideal; in the algorithm iteration process, when deleting or adding a "candidate super edge", whether to perform deletion or addition can be determined according to whether the hypergraph entropy can be reduced; the Jaccard similarity coefficient makes the identified similarity of communities not be too large, and when the similarity between two communities is greater than the average similarity, the two communities will be merged, so that community identification accuracy can be greatlyimproved; and finally, by identifying the intersection between the communities, the bridge nodes are obtained.

The invention provides a treatment method of catalytic cracking diesel oil. The treatment method comprises the following steps: a) mixing diesel oil with rich absorption oil so as to obtain mixed diesel oil; b) carrying out steam stripping on the mixed diesel oil obtained in the step a) so as to respectively obtain a diesel oil product and a gas phase component; and c) carrying out gasoline-diesel oil separation on the gas phase component obtained in the step b) so as to obtain diesel oil and a gasoline product, and repeating the step a) on the diesel oil. Compared with the prior art, the treatment method provided by the invention has the operation that the rich absorption oil is not conveyed back into a fractionating tower from the top of the fractionating tower any longer, but is mixed with diesel oil which is sucked out from the fractionating tower and used for producing a diesel oil product instead, so that the property of the diesel oil is improved, generation of the diesel oil product is facilitated, and the situation that the initial boiling point of the diesel oil is reduced and the overlapping degree of gasoline-diesel oil is increased as the absorption rich oil of a low temperature is retained in the fractionating tower is avoided; and on premise that the diesel oil product is qualified, the overlapping degree of the gasoline-diesel oil is reduced, the ratio of diesel oil to gasoline is reduced, and the yield of a high additional value product is increased.

The disclosure provides a light-emitting diode epitaxial wafer and a manufacturing method thereof, which belong to the technical field of semiconductors. The light-emitting diode epitaxial wafer includes a substrate, and a low-temperature buffer layer, a high-temperature buffer layer, an N-type layer and an active layer sequentially stacked on the substrate. A plurality of alternately grown electron blocking layers and P-type layers on the source layer, each of which is an AlGaN layer, along the stacking direction of the epitaxial wafer, in each period of the electron blocking layer The Al composition decreases gradually, the thickness decreases gradually, and the doping concentration of Mg in the P-type layer increases gradually in each period. The epitaxial wafer of the light emitting diode can increase the overlapping degree of the wave function of the electron and the hole in the spatial distribution, thereby improving the internal quantum efficiency of the LED.

The invention discloses a multi-area array aerial camera platform calibration method with a constraint condition. The method includes: employing a data acquisition strategy of multiple cross flying camera station exposure to acquire multiple groups of sub-images with an adjacent virtual image overlap degree of more than 80%; making use of the control point of a ground calibration field to calculate a photographing centre distance of sub-cameras and a sub-camera line element; during aerotriangulation, conducting bundle block adjustment, according to the control point coordinate, the connection points among matched sub-images, and the external orientation element initial value, establishing a model through a collinearity equation, adopting the photographing centre distance of the sub-cameras as a given value, i.e. taking the sub-camera line element constant as the constraint condition, and taking platform calibration parameters as a whole to perform calculation to solve the angle elements in the external orientation elements of the sub-images. According to the calibration method, a lot of uniformly distributed connection points are matched, precision of the platform calibration parameters is improved through the constraint condition, higher stitching precision of the generated virtual images can be guaranteed, and the mapping precision can be higher.

The invention discloses a method for generating neural questions with improved correlation. The present invention relates to a neural problem generation method for improving correlation, comprising: a QG model based on seq2seq, composed of an encoder layer and a decoder, and adding an attention mechanism and a copy mechanism; and a partial copy mechanism based on character overlap. Beneficial effects of the present invention: through the partial copy mechanism based on character overlap, we can make the generation problem have higher overlap and correlation with input documents at the word level. Through the re-ranking mechanism based on the QA model, we can assign higher scores to the generated candidate questions with better quality, and filter out those more general and difficult-to-answer questions.

The invention provides a multi-rotor frequency-changing sand mixer and a sand mixing method. Due to the application of a multi-rotor cutter, the overlapping degree of stirring tracks of a material is improved; meanwhile, due to the application of a frequency-changing rotor speed adjusting technology, the mixing process meet change of physical characteristic of mixed sand, that is, the mixing process can be more conductive to uniform coating of an auxiliary material (bentonite) on sand particles in the presence of water, so that the influence of small particles formed by the bentonite due to incomplete mixing on the mixing quality of casting sand can be avoided. A frequency changer is capable of automatically adjusting the frequency of a motor in a range of 50HZ-30HZ under the control of a rotation speed-time program which is determined by an industrial personal computer in advance. The multi-rotor frequency-changing sand mixer and the sand mixing method provided by the invention have the characteristics of uniformity in mixing the sand, high efficiency of mixing the sand and low energy consumption.

The invention belongs to the technical field of far-infrared laser, and particularly relates to a Michelson interference type far-infrared light polarization state conversion device and an implementation method thereof. The device comprise a first linear polarizer, a movable mirror, a fixed mirror, a second linear polarizer, a lens and a detector. The far-infrared light polarization state conversion device can achieve periodic adjustment and conversion from linearly polarized light to near-circularly polarized light and then to linearly polarized light, has the advantages of being wide in working wavelength range, good in polarization state conversion effect and the like, and compared with a traditional 45-degree incident ray polarizer mode, the far-infrared light polarization state conversion device utilizes the Michelson interference principle, the optical path difference of two beams of convergent laser can be adjusted at will, the limitation that the polarization state conversion and adjustment process is limited by the distance between a plane mirror and a linear polarizer is broken through, the conversion and adjustment difficulty is lowered, and the conversion and adjustmentof the far infrared polarization state within a wider wavelength range are achieved. Meanwhile, the two beams of convergent laser can completely coincide, and the signal-to-noise ratio of the polarization state of the combined laser is improved.

The invention provides a treatment method for catalytic cracking diesel oil, comprising the following steps: a) mixing diesel oil with rich absorption oil to obtain blended diesel oil; b) stripping the blended diesel oil obtained in step a) to obtain diesel product and gas phase components; c) separating the gas phase components obtained in step b) from gasoline and diesel oil to obtain diesel oil and gasoline products; the diesel oil repeats the process of step a). Compared with the prior art, the treatment method provided by the present invention no longer transports the rich absorption oil from the top of the fractionation tower to the fractionation tower, but mixes it with the diesel oil extracted from the fractionation tower for the production of diesel products, thereby improving both The nature of diesel oil is conducive to the generation of diesel products, and it also prevents the low-temperature rich absorption oil from lowering the initial boiling point of diesel oil in the fractionating tower, which increases the overlapping degree of gasoline and diesel oil; it can be reduced under the premise of ensuring that diesel products are qualified. The overlapping degree of gasoline and diesel will reduce the diesel-gasoline ratio and increase the output of high value-added products.